Inventors:
Michael Femal - Arlington Heights IL, US
Robert Stephenson - Appleton WI, US
Frederick Tegge - Appleton WI, US
David Stringham - Appleton WI, US
David Schwerbel - Menasha WI, US
Jon Kellett - Geneva IL, US
International Classification:
C08H 5/02
Abstract:
Organic substrates such as grain by-products: wet cake, mash, stillage, wet brewers cake are dewatered in a relatively low energy, low-heated gas flow, negative pressure, four stage process consisting of leaching with organic solvent, mechanical dewatering, evaporation and reclamation of the organic solvent in an environment of a stable gas flow. The dried organic substrate is processed into a dry distiller's grains with solubles which is free-flowing quality substance suitable for food or other uses at much lower substrate drying temperatures generally below 200° F. Conveniently, the solvent and the stable gases are recovered from the water-solvent leaching and dewatering process by a distillation tower and feedback loop system allowing the recycling of the solvent and stable gas while reducing the level of air emissions in the unique drying system.